A randomized 25 question test from a pool of 761 questions, good luck!
The OSI model describes how a network should be arranged. Which of the layers below concern network topologies the most?
In the protocol specifications of Modbus, there are standard 5 and 6 digit addresses, each address starting with a specific number for the register type. Which number below starts the input status registers addresses?
The addition of BCC to the message frame increases the efficiency of detecting errors in transmissions. which one of the error check systems based on a mathematical expression and is available to be used on data frames too large for any other method of error checking?
There are numerous styles of fiber optic cables. Which of the answers below best represents the number of criteria that is used to match the proper cable to the desired application?
In the protocol specifications of Modbus, there are only four types of registers that can be accessed by the master. Which of the terms below is best described as a analog input memory location?
In the unbalanced signal transmission system, which answer best represents the number 6?
Which of the Hart access methods below can be best described as one that field devices must be instructed by a controller module to preform any action?
RS-232 to USB is the best example of which of the following converters?
Baseband NRZ signalling is the standard for all physical connections with Ethernet. Which of the signalling methods below has the disadvantage of losing the clock signal when spaces are transmitted for an extended series?
Over the lifetime of a HMI, there will be changes to it's software form the supplier. Which of the terms below would best describe the red number in the picture below?
Which of the answers best represents the number OSI network layers that the Foundation fieldbus frame is enclosed in?
Each network layer for a DCS has it's own specialized equipment or software. Which of the layers below would make use of a Foundation Fieldbus protocol?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of two output holding registers # 40002 & 40003 to the slave device
Subnet masks in IPv4 are used to divide an existing network. A class B network with 2 nodes, one with an IP address of 128.0.0.1 and a mask of 255.255.0.0. Which of the answers below reflects the address the other node must have for the two nodes to communicate?
In the protocol specifications of Modbus, there are only four types of registers that can be accessed by the master. Which of the terms below is best described as a analog input memory location?
There are numerous I/O modules that a typical DCS has access to. Which of the modules below is described as one that can have 8, 16, or 32 inputs powered by 24Vdc, or 120Vac??
All the wired network components interact with ISO layers. Which of the answers below reflects the ISO layers that the switch interacts with?
The quality of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the value may be useful, but of diminished quality?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "E"?
There are many conventions to the creation of tags in a HMI. Which of those conventions would best describe the part of a tag that the arrows are pointing to in the picture below?
There are numerous threats to the security of a DCS. Which of the security measures below requires a login to a user account?
The wired Ethernet transmission standards are defined by the OSI model layers. Which of the answers below is one of those defining layers?
The (DA) server in a SCADA system administers remote site communications. Which of the environments below would the (DA) server reside?
Which of the answers below is not a common fiber optic connector in the instrumentation field? Choose the answer that best applies.
Which of the answers below best reflects the power range that is transmitted to field devices when the Foundation fieldbus H1 is operating?